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Inventor

Kazunori Bannai

Inventor
Tokyo, JP

Overview

54→
Patents
1990–2017
Patent span
Physics
Primary field (CPC G)

Patents· 54 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

G03Gprimary
G03GElectrography43%
H04NPictorial communication, e.g. television24%
B41JTypewriters9%
G02BOptical elements, systems or apparatus9%
B65HHandling thin or filamentary material, e.g. sheets, webs, cables7%
G06KGraphical data reading4%
B42DBooks1%
B43MBureau accessories not otherwise provided for1%
G06FElectric digital data processing1%
PatentTitleYear
9,772,809'Printed matter delivery system, image forming apparatus, and printed matter delivery apparatus'20179,030,519'Optical writing device and image forming apparatus'20158,929,752'Fixing device and image forming apparatus using same'20158,774,691'Image forming apparatus, fixing device, and fixing method'20148,752,955'Inkjet printer'20148,752,821'Image forming apparatus'20148,428,498'Fixing device and image forming apparatus including same'20138,428,480'Fixing device, image forming apparatus incorporating same, and method of dimensioning fixing device'20138,373,736'Optical scanning device and image forming apparatus'20138,346,106'Fixing device and image forming apparatus using same having a second heater outside the recording medium passing area'20138,195,058'Toner fixing device with light control mirrors and image forming apparatus incorporating same'20128,014,713'Fixing device and image forming apparatus'20117,986,334'Image forming apparatus, optical writing device, and optical writing method'20117,916,161'Image forming apparatus'20117,907,869'Charging brush unit, charging device, and image forming apparatus'20117,880,760'Optical writing device and image forming apparatus'20117,860,442'Image fixing device having carbon lamp and reflector'20107,705,872'Optical writing device and image forming apparatus'20107,697,184'Optical scanning device and image forming apparatus'20107,619,643'Method and apparatus for image forming capable of effectively avoiding an adverse temperature effect to an optical scanning system'20097,589,756'Optical scanning device, image forming apparatus, optical scanning correcting method, and image forming method'20097,450,146'Optical scanning device including plural light shielding units provided at different heights and image forming apparatus'20087,436,425'Optical writing apparatus and image forming apparatus'20087,264,347'Recording-medium conveying device conveying a recording medium on a conveying belt charged with a positive charge and a negative charge alternately'20077,215,349'Method and apparatus for image forming capable of effectively avoiding an adverse temperature effect to an optical scanning system'20077,050,731'Image forming apparatus including transfer belt having uneven thickness and position shift detection and correction method'20066,891,559'Optical scanning apparatus and an image forming apparatus'20056,873,346'Image forming apparatus'20056,836,633'Optical scanning device and image forming apparatus including the optical scanning device'20046,786,590'Recording-medium conveying device conveying a recording medium on a conveying belt charged with a positive charge and a negative charge alternately'20046,697,092'Color image forming apparatus with color image shift correction'20046,075,624'Method and apparatus for turning over pages of book-original'20005,847,845'Book document reading device'19985,689,348'Book document reading device'19975,682,227'Royalty accounting system for a book copier'19975,610,720'Book document reading device having a page turning capability'19975,583,607'Image forming apparatus having book reading and page turning capabilities'19965,583,662'Book document reading device having a page turning capability'19965,471,277'Book document reading device having a page turning capability'19955,390,033'Method and apparatus for turning over pages of book-original'19955,325,213'Image reader and book document reader with a page turning capability for an image forming apparatus'19945,316,282'Sheet feeding and separating device for image forming equipment'19945,315,322'Image forming apparatus with anti-banding implementation'19945,297,376'Finisher for an image forming apparatus'19945,270,783'Image forming equipment having improved toner sensing'19935,255,904'Feeder or image forming apparatus'19935,227,842'Electrophotographic image forming apparatus which controls developer bias based on image irregularity'19935,224,693'Multistage paper feeding/conveying apparatus and method that uses electro static forces'19935,219,154'Sheet feeding and separating device for image forming equipment'19935,160,969'Image forming apparatus having a separate black developer stored for a color image'19925,121,170'Device for transporting sheet members using an alternating voltage'19925,055,860'Image forming apparatus'19914,987,428'Color image forming apparatus'19914,933,727'Color recording apparatus'1990

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1990–2010Patents assigned to RICOH KK (37)· patent assignee history
1990–1994Based in Yokohama, JP· patent location history
1992–2008Based in Tokyo, JP· patent location history
2008–2017Based in Kanagawa, JP· patent location history
2010–2017Patents assigned to RICOH CO LTD (17)· patent assignee history
2010–2015Based in Atsugi, JP· patent location history
2011Based in Atsugl, JP· patent location history
2012–2017Patents assigned to BANNAI KAZUNORI (11)· patent assignee history
2012–2015Patents assigned to FUJIWARA HIDEHIKO (6)· patent assignee history
2012–2015Patents assigned to TAKENAKA KOHTA (4)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
RICOH KK371990–2010
RICOH CO LTD172010–2017
BANNAI KAZUNORIself112012–2017
FUJIWARA HIDEHIKO62012–2015
TAKENAKA KOHTA42012–2015
Locations
LocationPatentsSpan
Tokyo, JP261992–2008
Kanagawa, JP102008–2017
Atsugi, JP102010–2015
Yokohama, JP51990–1994
Atsugl, JP12011